CHAPTER-3 PLAYING WITH NUMBERS (SET-3)

Questions in this test

1. Simplify $81\ of\ \left[59-\left\{7\times 8+\left(13-2\ of\ 5\right)\right\}\right]$
2. The HCF of two co-prime numbers is ______.
3. Find the product of the smallest even prime number and the smallest odd composite number.
4. Replace ☆ by the smallest digit, so that it becomes divisible by 4. in 15☆44?
5. The HCF and LCM of the two numbers are 19 and 114. If one of the number is 38, find the other number.
6. The HCF of any two or more numbers is a _________ of their LCM.
7. Find the least number which when divided by 9, 11, and 13 leaves 1, 3, 5 as the respective remainders.
8. The difference between the smallest and the greatest prime number between 20 and 70 is:-
9. Which of these numbers are divisible by 11?
10. Four bells are arranged in such a manner that they ring once every 5, 8, 10, and 12 minutes respectively. After how many minutes of their ringing simultaneously will they ring again together?